#include <Wire.h>
#include <RTClib.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>

// Initialize RTC, Servo, and LCD
RTC_DS1307 rtc;
Servo servoMotor;
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define pins
const int buzzerPin = 12;
const int ledPin = 9;
const int servoPin = 13;

// Feeding times
const int feedHour1 = 8; // 8:00 AM
const int feedHour2 = 16; // 4:00 PM

void setup() {
  // Start Serial Monitor
  Serial.begin(9600);

  // Initialize RTC
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  // Initialize LCD
  lcd.begin(16,2);
  lcd.backlight();
  
  // Initialize servo motor, buzzer, and LED
  servoMotor.attach(servoPin);
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
  
  lcd.setCursor(0, 0);
}

void loop() {
  DateTime now = rtc.now();

  // Display current time on LCD
  lcd.setCursor(0, 0);
  lcd.print("Waktu:");
  lcd.print(now.hour(), DEC);
  lcd.print(":");
  lcd.print(now.minute(), DEC);
  lcd.print(":");
  lcd.print(now.second(), DEC);

  // Feeding schedule
  if (now.hour() == feedHour1 && now.minute() == 0 && now.second() == 0 ||
      now.hour() == feedHour2 && now.minute() == 0 && now.second() == 0) {
    // Show feeding status on LCD
    lcd.setCursor(0, 1);
    lcd.print("Memberi Makan...  ");

    // Turn on LED and buzzer
    digitalWrite(ledPin, HIGH);
    digitalWrite(buzzerPin, HIGH);

    // Move servo to feed position
    servoMotor.write(90); // Move to feeding position
    delay(5000); // Wait for 5 seconds

    // Reset servo position
    servoMotor.write(0);

    // Turn off LED and buzzer
    digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);

    // Reset LCD status
    lcd.setCursor(0, 1);
    lcd.print("Menunggu Makan    ");
  }
  
  delay(1000); // Update every second
}